Originally Posted by olewarthog
Most dial therms have a nut on the backside for adjustments. Dip the probe end in boiling water & adjust accordingly.
If you are wanting to cook at 270, I would suggest start closing off intakes at 250 & allow the drum to rise slowly to 270. Once you have the temp stabilized, the thick white smoke should give way to thin, blue smoke. Mine normally settles in & is producing thin blue smoke in about 30-40 mins from start up, but each drum reacts a little different.
Thanks for the tips. I will adjust the therms this weekend, and will try closing off the intakes and see if i can get the blue smoke.